The national income consists of a collection of goods and services reduced to common basis by being measured in terms of money. Who says this ?

The national income consists of a collection of goods and services red

1.	The national income consists of a collection of goods and services reduced to common basis by being measured in terms of money. Who says this ?
A.	Samuelson
B.	Kuznets
C.	Hicks
D.	Pigou
Answer» D. Pigou